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Buoyant line and method for forming

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Publication number
US5694755A
US5694755A US08787715 US78771597A US5694755A US 5694755 A US5694755 A US 5694755A US 08787715 US08787715 US 08787715 US 78771597 A US78771597 A US 78771597A US 5694755 A US5694755 A US 5694755A
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US
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Grant
Patent type
Prior art keywords
buoyant
line
core
fibers
strands
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08787715
Inventor
Per Fr.o slashed.ystad
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Froystad Fiskevegn AS
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Froystad Fiskevegn AS
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Publication date
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Family has litigation

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    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/12Ropes or cables with a hollow core
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/20Buoyant ropes, e.g. with air-filled cellular cores; Accessories therefor
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2201/00Ropes or cables
    • D07B2201/20Rope or cable components
    • D07B2201/2047Cores
    • D07B2201/2052Cores characterised by their structure
    • D07B2201/2063Cores characterised by their structure being hollow
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2201/00Ropes or cables
    • D07B2201/20Rope or cable components
    • D07B2201/2047Cores
    • D07B2201/2052Cores characterised by their structure
    • D07B2201/2064Cores characterised by their structure being discontinuous in the longitudinal direction
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2501/00Application field
    • D07B2501/20Application field related to ropes or cables
    • D07B2501/2038Agriculture, forestry and fishery

Abstract

A buoyant line or rope made from two or more strands of natural or synthetic fibers, with the fibers in one or more of the strands being arranged (e.g., by being spun or "laid") around a buoyant core. The relative buoyancy of the line may be increased or decreased by changing the number of strands having a buoyant core or by changing the diameter of the buoyant cores.

Description

This application is a continuation of application Ser. No. 08/380,164, filed Jan. 30, 1995, now abandoned.

FIELD OF THE INVENTION

This invention relates to a buoyant line or rope made from natural or synthetic fibers and having a buoyant core.

BACKGROUND OF THE INVENTION

A buoyant line or rope is commonly used in fishing tackle such as fishing lines and nets or in other applications where it is desirable for the line or rope to be buoyant or to float on the surface of the water.

Previously, floating lines have been produced by plaiting the strands of the line around a continuous buoyant core of expanded plastic material. With this type of floating line, only a single buoyant core is used and the strands are plaited to form a "jacket" around the core. Such plaited floating lines are expensive to produce as the mechanical production method is complicated and slow. Further, it is difficult and time-consuming to splice the plaited lines because each strand in the end of each line must be interwoven into the end of the other line.

In U.S. Pat. No. 3,558,420, a melted, synthetic polymer material is extruded through rotating nozzles to form hollow fibers which are interwoven with solid fibers of the same or different diameter to form marine lines, ropes or nets. Unfortunately, such a line or rope is difficult and expensive to manufacture, and has a relatively low buoyancy.

SUMMARY OF THE INVENTION

In accordance with the present invention, a buoyant line or rope is made from two or more strands which in turn are formed from natural or synthetic fibers. In at least one of the strands, the fibers are arranged around a buoyant core. This improved buoyant line is cheaper to manufacture, has improved buoyancy, and can be spliced more easily and quickly than existing floating lines or ropes. In one embodiment of this invention, the individual strands are formed from fibers which are spun ("laid") around a buoyant core such as expanded polypropylene, polythene, polyester, nylon, or polystyrene. In another embodiment, the buoyant core is a hollow core made from a material such as extruded polypropylene, polythene, polyester, nylon, or polystyrene.

Since a plaited line requires approximately 10-15 times as long to manufacture as a "laid" line, the spun or "laid" buoyant line of the present invention has significantly lower production costs. It is also much faster and easier to splice the "laid" line of the present invention, because arranging the buoyant portions of the line as the cores of the individual strands allows the line to be spliced in the ordinary manner used for laid lines.

DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a buoyant line according to one embodiment of the present invention, with the strands in one end of the line separated and the fibers removed to show the buoyant core of each strand.

FIG. 2 illustrates another embodiment of a buoyant line.

DETAILED DESCRIPTION

FIG. 1 illustrates one embodiment of a buoyant line 1 having three strands 3 according to the present invention. In this embodiment, each individual strand 3 is formed from natural or synthetic fibers (not shown in detail) such as hemp, Manilla hemp, nylon, or terylene, arranged (e.g., by being spun or "laid") around a buoyant core 2. The buoyant core 2 in the center of each strand 3 is protected from damage by the surrounding fibers. The individual strands 3 are then intertwined (e.g., by also being spun or "laid") to form the buoyant line 1.

In the embodiment of FIG. 1, each of the individual strands 3 has a buoyant core 2. It should be recognized, however, that the buoyancy of the line 1 may be reduced if desired by using one or more strands 3 which do not have a buoyant core 2. Also, the buoyancy of the line 1 may be reduced (or increased) by reducing (or increasing) the diameter of the cylindrical buoyant cores 2.

FIG. 1 shows each buoyant core 2 as being formed from a plurality of separate but preferably continuous buoyant elements. For example, the separate buoyant elements may be connected in such a manner as to resemble a "string" of sausages. An advantage of this structure is that the line or rope remains buoyant even if one or several of the individual buoyant elements are punctured or otherwise leak. In other embodiments one or more of the buoyant cores 2 is formed from a single continuous buoyant element. Further, in some embodiments the buoyant cores 2 only provide buoyancy, while in other embodiments one or more of the buoyant cores 2 is also a load-bearing element.

It is to be understood that the above description is intended to be illustrative and not restrictive. Many variations of the invention will become apparent to those of skill in the art upon review of this disclosure. Merely by way of example, the embodiment of FIG. 1 illustrates a buoyant line formed from three strands, but it will be apparent to those of skill in the art that a buoyant line may be formed from only two or from more than three strands without departing from the scope of the invention herein. The scope of the invention should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims along with their full scope of equivalents.

Claims (9)

I claim:
1. A buoyant line, comprising:
a first strand comprising a first plurality of fibers; and
a second strand comprising a second plurality of fibers arranged around a buoyant core, said buoyant core consisting essentially of an expanded plastic material or an extruded plastic material having a hollow core; and
wherein the first and second strands are intertwined.
2. A line as in claim 1 wherein the second plurality of fibers in the second strand are spun fibers arranged around the buoyant core.
3. A line as in claim 1 wherein the fibers in said second strand are spun fibers arranged around the buoyant core.
4. A line as in claim 1 wherein the buoyant core expanded plastic material is selected from the group consisting of expanded polypropylene, polythene, polyester, nylon, and polystyrene.
5. A line as in claim 1 wherein the buoyant core extruded plastic material is selected from the group consisting of extruded polypropylene, polythene, polyester, nylon and polystyrene.
6. A line as in claim 1 wherein the buoyant core comprises a plurality of buoyant elements in a sausages-like string.
7. A line as in claim 1 wherein the first and second plurality of fibers are selected from the group consisting of hemp, Manila hemp, nylon, and terylene.
8. A buoyant line, comprising at least two strands, each comprising a plurality of fibers, where at least one of the strands is provided with a buoyant core, said buoyant core consisting essentially of an expanded plastic material or an extruded plastic material having a hollow core.
9. A line as in claim 8 wherein the buoyant core comprises a string of connected cylindrical buoyant cores and wherein the buoyancy of the line is determined by the diameter of the buoyant cores.
US08787715 1994-02-02 1997-01-23 Buoyant line and method for forming Expired - Fee Related US5694755A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NO940343 1994-02-02
NO940343 1994-02-02
US38016495 true 1995-01-30 1995-01-30
US08787715 US5694755A (en) 1994-02-02 1997-01-23 Buoyant line and method for forming

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08787715 US5694755A (en) 1994-02-02 1997-01-23 Buoyant line and method for forming

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US38016495 Continuation 1995-01-30 1995-01-30

Publications (1)

Publication Number Publication Date
US5694755A true US5694755A (en) 1997-12-09

Family

ID=19896810

Family Applications (1)

Application Number Title Priority Date Filing Date
US08787715 Expired - Fee Related US5694755A (en) 1994-02-02 1997-01-23 Buoyant line and method for forming

Country Status (10)

Country Link
US (1) US5694755A (en)
JP (1) JPH09508447A (en)
CN (1) CN1057581C (en)
CA (1) CA2182036A1 (en)
DE (1) DE69422973D1 (en)
DK (1) DK0666364T3 (en)
EP (1) EP0666364B1 (en)
ES (1) ES2144476T3 (en)
RU (1) RU2136797C1 (en)
WO (1) WO1995021286A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5826421A (en) * 1996-06-19 1998-10-27 Gsp Products, Inc. Foam string mop head
ES2148081A1 (en) * 1998-07-06 2000-10-01 Garcia Jose Manuel Pelegrin Fishing net buoyancy line consists of a compact non hitch and non entangle plastics coated core which does not tear the net
WO2003081989A3 (en) * 2002-03-22 2004-04-01 Valentin Gavril Perevoshchikov Self-spreading trawls having a high aspect ratio mouth opening
US20040202805A1 (en) * 2003-04-14 2004-10-14 David Chroman Inflatable hardening rope
US20040200120A1 (en) * 1997-04-14 2004-10-14 Sherif Safwat Cell design for a trawl system and methods
US20060272196A1 (en) * 1996-10-11 2006-12-07 Sherif Safwat Cell design for a trawl system and methods
US20090011668A1 (en) * 2007-07-02 2009-01-08 Grohe Enterprises, Inc. Inflatable rope
CN102947503A (en) * 2010-06-21 2013-02-27 Php纤维有限公司 Buoyant rope
US20140157973A1 (en) * 2012-07-12 2014-06-12 Thomas Plante Braided rope
CN105420874A (en) * 2016-01-06 2016-03-23 江苏工程职业技术学院 Ultra-light high-strength anti-microbial algae removal fishing net yarn manufacturing method
US20160241006A1 (en) * 2015-02-17 2016-08-18 Angler's-Friend, LLC Buoyant electric rope with bubbler

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6247359B1 (en) * 1998-12-07 2001-06-19 Inventro Ag Apparatus for identification of need to replace synthetic fiber ropes
DE19906336C2 (en) * 1999-02-16 2000-12-14 Huck Manfred Gmbh Co Kg Buoyant Seiler egg product
DE19906337C2 (en) * 1999-02-16 2002-11-07 Huck Manfred Gmbh Co Kg Buoyant textile fabric
CN101669460B (en) 2008-09-08 2010-12-22 中国水产科学研究院东海水产研究所 Method for manufacturing high-performance force separating ring for seawater cage
CN102182171A (en) * 2011-01-26 2011-09-14 余戈平 Cable
CN102182083A (en) * 2011-01-26 2011-09-14 余戈平 Cable

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE167739C (en) *
DE249017C (en) *
DE81624C (en) *
US411161A (en) * 1889-09-17 Floating life-line
US1602312A (en) * 1924-07-23 1926-10-05 Allcock & Company Ltd S Fishing line
US3558420A (en) * 1967-08-17 1971-01-26 Allied Chem Hollow filaments
GB1364895A (en) * 1971-12-06 1974-08-29 Standard Telephones Cables Ltd Cables
US3849929A (en) * 1972-01-27 1974-11-26 Scient Anglers Inc Buoyant fishing line
DK153975A (en) * 1974-04-11 1975-10-12 Mar-Pha Sa
US3936335A (en) * 1972-01-27 1976-02-03 Scientific Anglers, Inc. Process for producing a buoyant fishing line
US3968725A (en) * 1974-12-13 1976-07-13 Berkley & Company, Inc. High strength, low stretch braided rope
GB2239878A (en) * 1988-07-15 1991-07-17 Timo Piirto A floatable cord and a method for manufacturing the same
US5131218A (en) * 1990-07-16 1992-07-21 American Manufacturing Company, Inc. Sinking/floating rope

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979982A (en) * 1956-02-29 1961-04-18 Shuford Mills Inc Buoyant cordage
FR2197392A5 (en) * 1972-08-24 1974-03-22 Kersaudy Et Lem Ur Ets Cable comprising tubular sheath around floatable core - is easily handleable and floats uniformly

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE167739C (en) *
DE249017C (en) *
DE81624C (en) *
US411161A (en) * 1889-09-17 Floating life-line
US1602312A (en) * 1924-07-23 1926-10-05 Allcock & Company Ltd S Fishing line
US3558420A (en) * 1967-08-17 1971-01-26 Allied Chem Hollow filaments
GB1364895A (en) * 1971-12-06 1974-08-29 Standard Telephones Cables Ltd Cables
US3849929A (en) * 1972-01-27 1974-11-26 Scient Anglers Inc Buoyant fishing line
US3936335A (en) * 1972-01-27 1976-02-03 Scientific Anglers, Inc. Process for producing a buoyant fishing line
DK153975A (en) * 1974-04-11 1975-10-12 Mar-Pha Sa
US3968725A (en) * 1974-12-13 1976-07-13 Berkley & Company, Inc. High strength, low stretch braided rope
GB2239878A (en) * 1988-07-15 1991-07-17 Timo Piirto A floatable cord and a method for manufacturing the same
US5131218A (en) * 1990-07-16 1992-07-21 American Manufacturing Company, Inc. Sinking/floating rope

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5826421A (en) * 1996-06-19 1998-10-27 Gsp Products, Inc. Foam string mop head
US20060272196A1 (en) * 1996-10-11 2006-12-07 Sherif Safwat Cell design for a trawl system and methods
US20040200120A1 (en) * 1997-04-14 2004-10-14 Sherif Safwat Cell design for a trawl system and methods
ES2148081A1 (en) * 1998-07-06 2000-10-01 Garcia Jose Manuel Pelegrin Fishing net buoyancy line consists of a compact non hitch and non entangle plastics coated core which does not tear the net
US20050160656A1 (en) * 2002-03-22 2005-07-28 Safwat Sheriff A. Self-spreading trawls having a high aspect ratio mouth opening
WO2003081989A3 (en) * 2002-03-22 2004-04-01 Valentin Gavril Perevoshchikov Self-spreading trawls having a high aspect ratio mouth opening
WO2004092463A3 (en) * 2003-04-14 2004-11-25 David Chroman Inflatable hardening rope
WO2004092463A2 (en) * 2003-04-14 2004-10-28 David Chroman Inflatable hardening rope
US20040202805A1 (en) * 2003-04-14 2004-10-14 David Chroman Inflatable hardening rope
US20090169304A1 (en) * 2007-07-02 2009-07-02 Grohe Enterprises, Inc. Inflatable rope
US7517268B2 (en) * 2007-07-02 2009-04-14 Grohe Enterprises, Inc. Inflatable rope
US20090011668A1 (en) * 2007-07-02 2009-01-08 Grohe Enterprises, Inc. Inflatable rope
CN102947503A (en) * 2010-06-21 2013-02-27 Php纤维有限公司 Buoyant rope
US20130091822A1 (en) * 2010-06-21 2013-04-18 Php Fibers Gmbh Buoyant rope
US8850785B2 (en) * 2010-06-21 2014-10-07 Php Fibers Gmbh Buoyant rope
US20140157973A1 (en) * 2012-07-12 2014-06-12 Thomas Plante Braided rope
US20160241006A1 (en) * 2015-02-17 2016-08-18 Angler's-Friend, LLC Buoyant electric rope with bubbler
CN105420874A (en) * 2016-01-06 2016-03-23 江苏工程职业技术学院 Ultra-light high-strength anti-microbial algae removal fishing net yarn manufacturing method

Also Published As

Publication number Publication date Type
WO1995021286A1 (en) 1995-08-10 application
CN1139967A (en) 1997-01-08 application
DK666364T3 (en) grant
JPH09508447A (en) 1997-08-26 application
EP0666364A2 (en) 1995-08-09 application
ES2144476T3 (en) 2000-06-16 grant
DK0666364T3 (en) 2000-05-29 grant
EP0666364B1 (en) 2000-02-09 grant
EP0666364A3 (en) 1996-04-03 application
RU2136797C1 (en) 1999-09-10 grant
CN1057581C (en) 2000-10-18 grant
DE69422973D1 (en) 2000-03-16 grant
CA2182036A1 (en) 1995-08-10 application

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